nvfx: implement TRUNC in vp and fp

diff --git a/src/gallium/drivers/nvfx/nvfx_fragprog.c b/src/gallium/drivers/nvfx/nvfx_fragprog.c
index 2b749efecee337e09df92b9af50336512b610d24..2c24d523c473195854da3ad1a6b83cf294e16b7d 100644 (file)
--- a/src/gallium/drivers/nvfx/nvfx_fragprog.c
+++ b/src/gallium/drivers/nvfx/nvfx_fragprog.c
@@ -725,12 +725,25 @@ nvfx_fragprog_parse_instruction(struct nvfx_context* nvfx, struct nvfx_fpc *fpc,
        case TGSI_OPCODE_TEX:
                nvfx_fp_emit(fpc, tex(sat, TEX, unit, dst, mask, src[0], none, none));
                break;
-       case TGSI_OPCODE_TXB:
-               nvfx_fp_emit(fpc, tex(sat, TXB, unit, dst, mask, src[0], none, none));
-               break;
-       case TGSI_OPCODE_TXP:
-               nvfx_fp_emit(fpc, tex(sat, TXP, unit, dst, mask, src[0], none, none));
-               break;
+        case TGSI_OPCODE_TRUNC:
+                tmp = nvfx_src(temp(fpc));
+                insn = arith(0, MOV, none.reg, mask, src[0], none, none);
+                insn.cc_update = 1;
+                nvfx_fp_emit(fpc, insn);
+
+                nvfx_fp_emit(fpc, arith(0, FLR, tmp.reg, mask, abs(src[0]), none, none));
+                nvfx_fp_emit(fpc, arith(sat, MOV, dst, mask, tmp, none, none));
+
+                insn = arith(sat, MOV, dst, mask, neg(tmp), none, none);
+                insn.cc_test = NVFX_COND_LT;
+                nvfx_fp_emit(fpc, insn);
+                break;
+        case TGSI_OPCODE_TXB:
+                nvfx_fp_emit(fpc, tex(sat, TXB, unit, dst, mask, src[0], none, none));
+                break;
+        case TGSI_OPCODE_TXP:
+                nvfx_fp_emit(fpc, tex(sat, TXP, unit, dst, mask, src[0], none, none));
+                break;
        case TGSI_OPCODE_XPD:
                tmp = nvfx_src(temp(fpc));
                nvfx_fp_emit(fpc, arith(0, MUL, tmp.reg, mask, swz(src[0], Z, X, Y, Y), swz(src[1], Y, Z, X, X), none));

diff --git a/src/gallium/drivers/nvfx/nvfx_vertprog.c b/src/gallium/drivers/nvfx/nvfx_vertprog.c
index 2894532bd197c35c4d701165a45f7aa8ccd60890..d68224ce7a232095901dd006752f482cb1adb894 100644 (file)
--- a/src/gallium/drivers/nvfx/nvfx_vertprog.c
+++ b/src/gallium/drivers/nvfx/nvfx_vertprog.c
@@ -614,6 +614,19 @@ nvfx_vertprog_parse_instruction(struct nvfx_context* nvfx, struct nvfx_vpc *vpc,
        case TGSI_OPCODE_SUB:
                nvfx_vp_emit(vpc, arith(VEC, ADD, dst, mask, src[0], none, neg(src[1])));
                break;
+        case TGSI_OPCODE_TRUNC:
+                tmp = nvfx_src(temp(vpc));
+                insn = arith(VEC, MOV, none.reg, mask, src[0], none, none);
+                insn.cc_update = 1;
+                nvfx_vp_emit(vpc, insn);
+
+                nvfx_vp_emit(vpc, arith(VEC, FLR, tmp.reg, mask, abs(src[0]), none, none));
+                nvfx_vp_emit(vpc, arith(VEC, MOV, dst, mask, tmp, none, none));
+
+                insn = arith(VEC, MOV, dst, mask, neg(tmp), none, none);
+                insn.cc_test = NVFX_COND_LT;
+                nvfx_vp_emit(vpc, insn);
+                break;
        case TGSI_OPCODE_XPD:
                tmp = nvfx_src(temp(vpc));
                nvfx_vp_emit(vpc, arith(VEC, MUL, tmp.reg, mask, swz(src[0], Z, X, Y, Y), swz(src[1], Y, Z, X, X), none));